Lighting the Way Efficiently. Buzzwords. Energy Efficiency I s a measure of the amount of energy which any technology can convert to useful work. Lighting Efficiency
Energy EfficiencyIs a measure of the amount of energy which any technology can convert to useful work.
Is a measure of how much visible light is given off from a lighting source per unit of energy . Light output (lumens) per unit of energy input (watts).
History of Lighting
The Birth of Light!
Thomas Edison announced to the world on December 21, 1879 the invention of the first electric light
Edison tried 6,000 alternative filament materials over two years, and spent $40,000 conducting more than 1,200 experiments!
Light bulbs went on sale in 1880
128 years ago!
‘A global switch to efficient lighting systems would trim the world's electricity bill by nearly one-tenth’
International Energy Agency (IEA) 2006
Incandescent bulbs are very inefficient, converting only about 5% of the energy they receive into light.
Magnetic Ballasts - Not very efficient
Electronic ballast - More efficient
Fluorescent lamps cut greenhouse gas emissions and running costs by 75% while producing as much light.
They come as circular or linear tubes, or as plug-in compact fluorescent lamps (CFLs).
When buying a compact fluorescent light bulb, choose a wattage that's about one-fourth of what you usually buy (incandescent bulbs).